E aguero



IINTTED STATES PATENT @EETCE.

MIGUEL E. DE AGUERO, OF NEIV YORK, N. Y.

COMBINED LATCH AND LOCK.

SPECIFICATION forming part of Letters Patent'No. 397,226, dated February 5, 1889.

Application filed April 6, 1888. $erial No. 269,881. (Modeld To all whom it may concern:

Be it known that I, MIGUEL E. DE AGUERO, a citizen of the United States, residing at New York, in the county of New York and State of New York, hat e invented new and useful Improvements in Combined Locks and Latches, of which the following is a specification.

My invention relates to that class of locks and latches in which the latch is operated by a longitudinal movement of the knob-shaft instead of a rotary one, as is the usual manner, and in which one latchserves also the purpose of a lock when properly operated upon by the key and locking mechanism. I attain these results by means of mechanism illustrated in the accompanying drawings, in which Figure 1 is a vertical section; Fig. 2, a vertical section taken through the center of and at right angles to Fig. 1. Fig. 3 is a similar view of a modification. Fig. l is a detail viewv of a modification. Fig. 5 is a plan of the key. Figs. 6 and 7 show modifications of details.

Similar letters of reference refer to similar parts throughout the figures.

A A are the knobs.

B is the knob-shaft secured thereto.

0 is a cross-piece provided with two lugs, Z Z, and which is secured to the shaft by means of a pin.

D is a spring bearing against C and pressing the shaft to the left.

E is a push-toggle fitted between the two lugs Z Z of O by means of a pin, 1'. This toggle E bears against the end F of a lever, l-I, pivoted at G to the casing of the lock. In Figs. 1, 2, and 3 this lever is shown as a bellcrank; but it may be straight, as shown in Fig. 7. The lever E and cross-head 0 may also be replaced by a knuckle-joint, as shown at E E in Fig. 6, one arm resting against the lever F, the other against a ledge, X, cast with the casing.

The latch R. is formed with a stem, T, which is provided with a shoulder, T, resting against the lever H, while the end of the stem passes through a hole, 2, in H. It is secured thereto by a pin, t. A spring, P, bears against the back of the latch R and against a ledge, T", cast to the cover. latch outward to the right. The lever H is also provided with a projection or camsurface, IV, against which the looking or key tumbler J acts in locking the latch. The tumbler J consists of an annular shell, 0'', with a se ment, 8, cut therefrom, so as to leave two radial cam-surfaces, s. This tumbler is also provided with a central web and hole through which the end n of the key passes, and a semiannular slot, (1, into which one of the projections P of the key fits.

I is the key-hole, and the casing of the lock is also provided with safety guards or projections a b c, which match the speciallyformed key L..

In Fig. 4; I have shown how the spring D may be placed in the handle instead of under the cross-piece C; and in Fig. 3 the spring P is shown secured behind the latch and lever H about a projection, :10, and in a cavity, 1

The following is the manner of operating my device: If the right-hand knob be pulled to the right, or the left-hand knob be pushed to the right, the toggle E will push lever H so as to draw the latch R away from the doorjamb. 0n releasing the hold from the knob, the springs D and P will return the same. By inserting the key, as shown in Fig. l, and turning the tumbler J, so that the rim '1' presses against the projection '10, the latch is securely locked, and the key may be removed.

I-laving thus fully described the nature of my intention, what I claim as new, and desire to secure by Letters Patent, is-

In a latch, the combination of a longitudinally-movable knob-shaft, B, collar 0 thereon, spring D, push-lever E, jointed to said collar, a lever fulcrumed at G, having arms F and H, latch R, and spring P, substantially as described.

In a combined lock and latch, the combination of a knob-shaft movable in the direct-ion of its length, a spring to resist the movement, a puslrpiece jointed to the shaft, a two-armed latch-lever operated by said puslrpiece, and a spring to close the latch, with a cam projection on the latch-lever and This spring presses the a revoluble key-tumbler 1'01 co-operating with tations, whereby the tumbler nmy he revolved, said cam in looking said latch, substantially substantially as described.

as described. W

, \ilTC E. )1 1). 5. The eomhlllmwn of a revolving tum- J (x11 l A 5 bier, J, having rim "1' and slot (1, a lock-casing \Viinesees:

having projections a Z) e, and a suitable key I. \V. DE AGUERO,

having emresprmrling' projections and 'imlen- \VM. IlAGGERTY. 

